Optimum ER Collets
Product overview
About this machine.
Optimum Maschinen is a respected German company known for manufacturing high-quality machine tools built to strict European standards. Since its founding in 2003, Optimum has become a trusted name in the metalworking industry, offering a wide range of equipment including metal lathes, milling machines, drilling machines, and grinding tools. Designed in Germany and engineered for precision, reliability, and durability, Optimum machines are used across workshops, training centres, and industrial environments throughout Europe and beyond. Their products are developed with a strong emphasis on innovation, safety, and compliance with European CE regulations, ensuring exceptional performance and long service life.
Optimum ER collets are high-precision tool holding components designed for secure and accurate clamping of drills, end mills, reamers, and other round shank tools. Manufactured from hardened, precision ground steel, they offer excellent concentricity and gripping force across a wide clamping range. Available in standard sizes from ER16 to ER50, these collets are compatible with all Optimum ER-style chucks and meet DIN 6499 standards. This makes them ideal for milling, drilling, and CNC applications where accuracy and repeatability are essential.
Features:
- Wide clamping range. Each collet covers a 1 mm range for flexible tool diameter compatibility
- High precision. Manufactured to DIN 6499 standard for excellent concentricity ( plus or minus 0.015 mm typical)
- Hardened and ground steel which ensures durability, accuracy, and resistance to wear
- Even gripping pressure. Reduces tool slippage and runout for smoother machining
- Fits all standard ER collet chucks, holders, and spindles
- Ideal for drills, end mills, reamers, taps, and other round-shank tools
Published data
Specifications
Scroll horizontally to compare models or capacities. Use these to shortlist. We’ll confirm the specification and configuration against the application.| Optimum | Optimum ER collets | ||
|---|---|---|---|
| Type | Increments & Range | Price Excl GST | |
| ER Spring Collets | |||
| ER16 | One millimeter increments | 2mm - 10mm | $20.00 each |
| ER20 | One millimeter increments | 2mm - 13mm | $22.00 each |
| ER25 | One millimeter increments | 2mm - 16mm | $24.00 each |
| ER32 | One millimeter increments | 2mm - 20mm | $25.00 each |
| ER40 | One millimeter increments | 3mm - 26mm | $30.00 each |
| ER50 | Two millimeter increments | 10mm - 34mm | $50.00 each |
| Boxed ER Collet Sets | |||
| ER16 | SER1608 / 8 pce set collets only | 3 - 10mm (8pcs) | $175.00 |
| ER20 | SER2011 / 11 pce set collets only | 3 - 13mm (11pcs) | $220.00 |
| ER25 | SER2514 / 14 pce set collets only | 3 - 16mm (14pcs) | $280.00 |
| ER32 | SER3206 / 6 pce set collets only | 6,8,10,12,16,20mm (6pcs) | $150.00 |
| ER32 | SER3218 / 18 pce set collets only | 3 - 20mm (18pcs) | $360.00 |
| ER40 | SER4007 / 7 pce set collets only | 6,8,10,12,16,20,25mm (7pcs) | $210.00 |
| ER40 | SER4023 / 23 pce set collets only | 4 - 26mm (23pcs) | $575.00 |
| ER50 | SER5006 / 6 pce set collets only | 12,14,16,20,26,34mm (6pcs) | POA |
| ER50 | SER5012 / 12 pce set collets only | 12,14,16,20,22,24,26,28,30,32,34mm (12pcs) | POA |
| ER50 | SER5012 / 12 pce set collets only | 12,14,16,20,22,24,26,28,30,32,34mm (12pcs) | POA |